| 摘要 |
PURPOSE:To obtain the title composition excellent in impact resistance and flame retardancy with transparency retained by blending a rubber based graft copolymer, a copolymer of a monomer specific in the refractive index as the polymer thereof and comonomers, etc., at specified amounts, respectively. CONSTITUTION:The objective composition can be obtained by incorporating a total of 100 pts.wt. of (A) 20-90 pts.wt. of a graft copolymer prepared by graft copolymerization of (1) 15-45wt.% of vinyl cyanide and (2) 85-55wt.% of an aromatic vinyl compound to (3) 5-60wt.% of a rubbery polymer and (B) 10-80 pts.wt. of a copolymer from (4) 15-45wt.% of vinyl cyanide, (5) 85-55wt.% of an aromatic vinyl compound and (6) 3-20wt.% of a copolymerizable monomer lower in the refractive index as the polymer thereof than that of the above rubbery polymer (e.g. 1-10C alkyl group-contg. alkyl acrylate), with (C) 10-50 pts.wt. of a halogen compound <=280 deg.C in melting or softening point and (D) 0.5-15 pts.wt. of an antimony compound <=0.1mum in granular size. |
